Method for lining pile shells



Jan. 3, 1933. E. D. WATT METHOD FOR LINING PILE SHELLIS NVENTOR BY l M ATTOR Filed April l, 1932 I l l Patented Jan. 3, 1933 1.1 am n UNITED STATES PATENT offri-CE ELIH D. WATT, 0F LA GRANGE, ILLINOIS, ASSIGNOR TO B'JAYIVIODTDV CONCRETE PILE i" COMPANY, OF NE'W YORK, N. Y., A CORPORATION OF NEXV JERSEY METHOD FOR LINI'NG PILE sHELLs- Application filed April 1, 1932. Serial No. 602,488.

as' 14, 46 the same as 16, 48 the same -as 18.

7h-en shells are driven into the ground preparatory to being filled with concrete to form concrete piles, it sometimes happens that a shell becomes punctured or torn. Such a leak may admit water and mud into the shell and thus render it impossible to inspect and unfit for filling with concrete. One way of overcoming a condition of that kind is to insert another shell inside the defective shell.

An object of the present invention is to disclose ways and means for performing the lining operation in shells of the kind shown in Patent No. 1,836,140, issued December 15, 1931, to M. M. Upson.

Further and other objects and advantages will be apparent from the specification and claims, and from the accompanying drawing which illustrates what is now considered the preferred embodiment of the invention.

Fig. 1 shows the original shell., the lining shell, and the drive core as adapted Jfor inserting the lining shell.

Fig. 2 shows the lining-inserting core.

Fig. 3 is an enlarged detail cross-sectional view of the lower part of Fig. 1.

he original shell, which is assumed to have sprung a leak, comprises cylindrical corrugated sections 10, 12, 14, 16, 18 and 20, each larger in diameter than the one below it and joined together by coupling rings such as 22, so shaped as to form shoulders to accommodate corresponding shoulders on the stepped driving core. A plow ring 24 is provided at each shoulder, and a shoe 26 closes the lower end oi the shell. This shell was driven by a core comprising steps 30, 32, 34, 36, 38 and another step, not shown, above step 38. These core steps during the driving of the original shell occupied shell sections 10, 12, 14, 16, 18 and 2O respectively.

The lining shell comprises sections 39, 40, 42, 44, 46 and 48, the lowest section, 39, being smaller in diameter than the lowest section 10 of the original shell so as to slip inside of section 10. The other lining shell sections are exactly the same as those of the original shell except they are placed one step higher, and the plow rings 24 are omitted. In other words, lining section 40 is the same as original section 10, 42 is the same as 12, 44 the same This-means that the 'same driving. core may be usedkto insert the lining shell as was `used to drive the original shell, the only difference being that core step 30 which was in shell section 10 in the original driving operation is now one step higher up, being within lining shell section 40, which forms the second shell section from the bottom in the lining, section 40 being within original shell section 12. Briefly, the core is one step higher up while inserting the lining than it was in the original driving operation.

During the original driving, the lower end of core step 30 had a semi-spherical plug (not shown) adapted to tit within shoe 26 and having a stem adapted to project into the core and be keyed therein.

During the lining operation the above mentioned plug is replaced by a core point 50, preferably hollow, of diameter to slip within lining section 39, and shaped at its lower end to tit the interior of shoe 52 attached to the bottom of section 39. The upper end of point 50 is riveted to the downwardly projecting stem 52 of a fitting which has a collar 54 adapted to receive the bottom of core step 30, and a shank 56 extending into 30 and secured therein by key 58.

rlhe method of practicing the invention will be readily apparent from the above description.

It is to be understood that the invention is not limited to the specific embodiment herein illustrated and described, but may be used in other ways without departure from its spirit as defined by the following claims.

1. In the method of lining a steppedtaper shell having sections decreasing in diameter downwardly, the steps of inserting in each of said shell sections a similar' shell section of slightly less diameter, and connecting said inserted sections end to end.

2. The invention set forth in claim 1 in which each of said inserted sections except the lowest is a substantial duplicate of the section forming the next lower section of said original shell.

3. The invention set forth in claim 1 in which said lining shell is mounted on a core "imo nature.

Yfor insertion in said originalshell, and said core is withdrawn after the lining is inserted. e 4. The method of lining a sectional pile shell which comprises inserting in certain of the sections of said shell, shell sections of a diameterztovt within previously driven shell Y sections and connecting said inserted sections.

5. The method of lining a step taperedshell having sections decreasing in diameter downwardly which consists in inserting in certain of said shell sections a substantially similar i shell section of slighly less diameterY and oonnecting said inserted sections.

6. The invention set forth in claim 1V in which each of the inserted sections is concentric-With the section into which it fits.

In testimony WhereofI hereto aiix my sig- VELIHU D. WATT. 

